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Raster Displays with "Holes" after Building Pyramids

RandalGreene1

Good day,

We have a large 16-bit unsigned integer raster in GRID format in 9.3. Before building pyramids it displays fine when zoomed out to the entire layer (see before.jpg, attached).

After building pyramids to improve display performance, it displays with "holes" (see after.jpg, attached). When we zoom in, the holes go away. What is causing this and how can we overcome it?

Thanks in advance,
Randal Greene

after.jpg

before.jpg

KumarGaurav_0-1625779002432.png

GB_MattPanunto_GISS_0-1625778061796.png

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PatrickTaurman

What renderer are you using?

Anonymous User

Original User: rgreenenf

What renderer are you using?

Unique values renderer.

PatrickTaurman

I believe this may be NIM040765. If you change <all other values> in the renderer to some color, I bet your white "holes" will display using this color.

Anonymous User

Original User: rgreenenf

I believe this may be NIM040765. If you change <all other values> in the renderer to some color, I bet your white "holes" will display using this color.

Yes, that's it. Thanks.

RandalGreene1

Very frustrating that this bug has still not been addressed as of ArcGIS 10 SP3! Note that the problem occurs when you have pyramids and you map one of the fields from the Raster Attribute Table (not when you map the value itself)...

Anonymous User

Original User: rgreenenf

Correction - the problem also still occurs when you map the raster value, just with less holes.

Anonymous User

Original User: voldune

Please try deleting the pyramids, and re-build them using ArcGIS 10. Let me know if that clears up the issue.

EricRice

Very frustrating that this bug has still not been addressed as of ArcGIS 10 SP3! Note that the problem occurs when you have pyramids and you map one of the fields from the Raster Attribute Table (not when you map the value itself)...

It does seem that you are encountering NIM040765 as Patrick suggested, but we can't be sure until you tell us what version you built the pyramids in. If you built the pyramids in 10.0, then you are encountering a new bug. NIM040765 is specific to pyramids built in 9.3.x. That bug is not open at this time. The status is Rejected - non repro -when you build the new pyramids (OVR files) in 10.0.

Regards,
Eric

Anonymous User

Original User: rogerloweth

I am using ArcGIS 10 (both SP2 and SP3 updates).

I encountered the same problem with a single band raster - the edges disappear when zoomed out to full extent with built pyramids.

Rebuilding the pyramids with level set to 0 solved the problem.

Note that I am mapping the raster value, NOT one of the fields.

Is this a new bug??

Regards, Roger

PatrickTaurman

Hi Roger,

To determine if this is a bug, we would need to obtain some data to test with. I would suggest contacting Esri Support, so they can look over this, and log a NIM if needed.

Patrick

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